The stinging cells in the hydra is what helps it paralyze its prey. Once it uses its stinging cells to paralyze it, the hydra then uses its tentacles to push into itsslef considering that its only one cell layer thin.
The stinging cells of the Hydra paralyze the daphnia.
Tentacles.
Stinging cells are found in phylum Cnidaria (hydra,jelly fish).These are present for defense of these animals along with nematoblasts(these are present for attack or offense)
Stinging cells will paralyze the prey of the Hydra. This makes it a lot easier for them to capture their food.
Stinging cells are called cnidocytes, as in all members of the Cnidarians which includes jellyfish, sea anemones, and corals.
The hydras have protective tentacles and stinging cells on them to protect themselves.
Cnidocytes
nemotocysts are the stinging structures an a Hydra
They live in sea. They are invertebrates. Invertebrates are animals with no backbone. They also have stinging cells.
nematocyst
The nematocysts are stinging cells of cnidarians located all along the feeding tentacles. These cells are inverted "harpoons" that react physically and chemically to stimuli at a speed of 1/1000th of a sec.
The stinging cells in a jellyfish are located in it's tentacles.